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2024年高粱生产技术指导意见

2024-05-08 09:40:28 来源:全国农业技术推广服务中心 阅读量:17389 评论

导读:农业农村部小宗粮豆专家指导组会同全国农业技术推广服务中心,以“优选良种、种子处理、合理茬口、精细播种、科学肥水、风险防控、适期收获”为重点,提出2024年高粱生产技术指导意见。

  【农机网 科技创新】 为充分发挥高粱耐旱、耐盐碱等优势特性,促进产量与品质协同提高,提高种植者收益,满足市场不同需求,根据今年生产形势和气候特点,农业农村部小宗粮豆专家指导组会同全国农业技术推广服务中心,以“优选良种、种子处理、合理茬口、精细播种、科学肥水、风险防控、适期收获”为重点,提出2024年高粱生产技术指导意见。
 
  优选良种处理
 
  依据用途(酿酒、食用、饲用等)选用经国家登记、适应性好、抗逆性强、品质优良的专用高产品种。春播品种要结合当地生态条件,在保证安全成熟的前提下,生育期不宜过短,以充分利用光温水土条件;夏播高粱作为夏收作物的后茬,宜采用早熟或中熟品种。雨量充沛地区,宜选择中散穗型品种,以抑制穗部病虫害。机械化收获的,宜选择矮秆、整齐度好、不易落粒的品种。谨防购买夸大宣传、跨区引进的品种。做好种子处理,播前3—4天晒种3—5小时,注意清除杂质。对未包衣种子,建议进行种子包衣或拌种处理,根据本地区病虫害发生特点,因地制宜科学选择种衣剂。
 
  合理茬口栽培
 
  高粱不宜重茬,一般选大豆、玉米等茬口;注意详细了解前茬除草剂使用情况,避免造成药害。精细整地,北方秋季前茬收获后抓紧整地(起垄),蓄水保墒,延长土壤熟化时间,达到“春墒秋保、春苗秋抓”目的;秋季未起垄的春季顶浆做垄,保蓄冬季积蓄于土壤表层的水分;一般耕地深度20—30厘米,提倡深翻,有条件的结合施用农家肥,也可翻、耙、种一次完成。栽培模式可单作高粱,也可与大豆、花生、食用豆等间作,提倡宽窄行栽培。干旱地块采取免耕播种或平播、垄沟播种等方式,适当深播浅覆土,也可采用地膜覆盖、膜下滴灌、“坐水”播种或浇水增墒后播种等抗旱节水措施;低洼地块提早起垄散墒、提高地温,垄上播种,适当晚播。播种应深浅一致、覆土薄厚一致,种子与土壤紧密接触,一般覆土厚度不超过3厘米,播后镇压保墒。推荐使用高粱播种机
 
  适时适量播种
 
  依据品种生育期、地温和土壤墒情确定播期,一般10厘米耕层地温稳定在12℃左右,土壤含水量在15%—20%为宜(大多为5月初)。春播地区宜适当晚播。根据品种特点、当地生态、生产条件、土壤肥力、施肥管理和种植习惯等确定密度,粒用高粱亩密度一般0.7万—1.2万株,特殊品种2万株。精量播种机播种时做好清选、晒种,保证种子大小均匀、整齐一致,一般亩播量0.4—0.5公斤,青饲青贮高粱根据具体情况适当加大播种量,人工播种需适当加大播种量。西南高粱产区采用育苗移栽种植的,应适时早栽。一般苗龄25—30天,最迟不超过35天(叶龄6叶左右)移栽。利用雨后抢墒或灌足水后移栽,栽后施清粪水。
 
  做好肥水管理
 
  肥料施用按照分期施肥、科学减量,增施基肥,施足种肥,适时追肥原则进行。一般亩施农家肥3000公斤,化肥用量折合纯氮 11—13公斤,五氧化二磷5—8公斤,氧化钾3—5公斤,并根据当地土壤情况和目标产量适当调整。农家肥作底肥,磷肥、钾肥及全部氮肥的30%结合播种一次性施入,全部氮肥的60%做拔节肥,10%做粒肥。施种肥时注意种、肥分开,以防烧种,影响出苗。如果采用一次性施肥方式,选用的肥料要长效短效结合,避免生育后期脱肥。高粱耐旱,但拔节孕穗和抽穗开花是需水关键期,如遇干旱,有条件地区应及时灌水。
 
  加强风险防控
 
  4—6叶期结合间苗和中耕进行除草,一般2次。精量播种地块可不间苗,在播种后出苗前喷施高粱专用除草剂封闭除草。一般不建议苗后化学除草,若必须苗后除草,可在5—8叶期前后施用高粱专用除草剂。严格控制除草剂种类、用量及喷施时期,以免造成药害。丝黑穗病、靶斑病、炭疽病、螟虫、蚜虫、粘虫是高粱常见病虫害,防治方法包括选用抗病品种,因地制宜进行轮作倒茬、种子处理、适时播种、适宜用药等。春播高粱区注意丝黑穗病、玉米螟等,夏播高粱区注意蚜虫、玉米螟等,南方高粱区注意玉米螟、炭疽病等,应早防早控。可采用地面喷施或扬撒合适药剂防治地下害虫、黑穗病等;在大喇叭口期喷施苏云金杆菌,采用杀虫灯、性诱剂、投放赤眼蜂等物理、生物方法防治螟虫。开花前,无人机等喷施适宜药剂,结合插草把诱蛾产卵灭杀棉铃虫。在幼虫3龄前防治粘虫。蚜虫呈点片发生时,可用适宜药剂防控。此外还应加强对灾害性天气的预防,及早制定相应的应急处置预案。特别注意防范早春低温冷害、干旱、涝灾和秋季早霜。
 
  适期收获晾晒
 
  当籽粒呈现品种固有形状和颜色,粒质变硬,穗下部籽粒内含物硬化成腊质状,粒色光亮,含水率降至20%左右时收获。可以采用人工或联合收割机收获。采用收割机收获时,要控制收割机行走速度,减少机收损失。食用高粱要适当早收,在蜡熟末期即可收获。南方区春播高粱收获期一般在7月份,常常高温多雨,建议该区高粱进入腊熟末期后,及时收获,抓紧晾晒,确保产量和质量。
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